this post was submitted on 16 Jun 2025
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[–] dual_sport_dork@lemmy.world 20 points 23 hours ago* (last edited 22 hours ago) (2 children)

You would be amazed in the industrial world. There are tons of large and incredibly expensive special purpose machines that are operated by super antiquated PC architecture computers running geriatric operating systems, sometimes still even DOS or Windows 3.x.

Think industrial CNC mills and lathes, presses, pick-and-place machines, specialty lab testing equipment, electron microscopes, etc.

Process control, i.e. production line automation, is usually driven by dedicated PLCs. But the user interfaces connected to them are almost invariantly some old ruggedized panel mounted PC running Windows. An absurd number of them in my experience are still on 2000 or XP. NT4 is pretty easy to find, too.

Granted often these are not networked, and in cases where they are they're not connected to the internet, or may even talk to other workstations via RS-485 serial (!) or some other gimcrack method that is unlikely to be a vector for modern malware.

[–] jordanlund@lemmy.world 8 points 22 hours ago

As long as they aren't networked, there's no problem there!

[–] nickhammes@lemmy.world 3 points 18 hours ago

Critically, the people who build these machines don't typically update drivers to port them to a new OS. You buy a piece of heavy equipment, investing tens, or maybe even a hundred thousand dollars, and there's an OS it works on, maybe two if you're lucky. The equipment hopefully works for at least 20 years, and basically no OS is going to maintain that kind of compatibility for that long. Linux might get the closest, but I'll bet you're compiling/patching your own kernels before 20 years is up.

This kind of dynamic is unavoidable when equipment vendors sell equipment which has a long usable life (which is good), and don't invest in software support (which is them being cheap, to an extent), and OSes change enough that these time horizons likely involve compatibility-breaking releases.